package com.seek.util;
import java.security.MessageDigest;  
import java.util.Random;  
  
import org.apache.commons.codec.binary.Hex;  
  
public class PasswordUtil {  
    /** 
     * 盐为手机号的后6位
     */  
    public static String generate(String password, String phoneNo) {   
        String salt = phoneNo.substring(6);  
        password = md5Hex(password + salt);  
        char[] cs = new char[48];  
        for (int i = 0; i < 48; i += 3) {  
            cs[i] = password.charAt(i / 3 * 2);  
            char c = salt.charAt(i / 3);  
            cs[i + 1] = c;  
            cs[i + 2] = password.charAt(i / 3 * 2 + 1);  
        }  
        return new String(cs);  
    }  
  
    /** 
     * 校验密码是否正确 
     */  
    public static boolean verify(String password, String md5) {  
        char[] cs1 = new char[32];  
        char[] cs2 = new char[16];  
        for (int i = 0; i < 48; i += 3) {  
            cs1[i / 3 * 2] = md5.charAt(i);  
            cs1[i / 3 * 2 + 1] = md5.charAt(i + 2);  
            cs2[i / 3] = md5.charAt(i + 1);  
        }  
        String salt = new String(cs2);  
        return md5Hex(password + salt).equals(new String(cs1));  
    }  
  
    /** 
     * 获取十六进制字符串形式的MD5摘要 
     */  
    public static String md5Hex(String src) {  
        try {  
            MessageDigest md5 = MessageDigest.getInstance("MD5");  
            byte[] bs = md5.digest(src.getBytes());  
            return new String(new Hex().encode(bs));  
        } catch (Exception e) {  
            return null;  
        }  
    }  
  
    public static void main(String[] args) {  
        String password = generate("admin","13968077910");  
    }  
}  